*{
    margin:0;
    padding:0;
    text-decoration: none;
    list-style: none;
}

#banner{
    width: 800px;
    height: 450px;
    border:2px solid #999;
    overflow:hidden;
    position:relative;
    margin:100px auto;
}
#imglist{
    width: 4000px;
    height: 400px;
}
#imglist img{
    width: 800px;
    height: 450px;
}
#imglist li{
    float:left;
}
.prev{
    background: transparent;
    width: 30px;
    height: 40px;
    color:#999;
    text-align: center;
    line-height: 40px;
    position:absolute;
    left:5px;
    top:45%;
    cursor:pointer;

}
.next{
    background: transparent;
    width: 30px;
    height: 40px;
    color:#999;
    text-align: center;
    line-height: 40px;
    position:absolute;
    right:5px;
    top:45%;
    cursor:pointer;
}
#icolist{
    position:absolute;
    right:10px;
    bottom:10px;
}
#icolist li{
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #737373;
    color:aliceblue;
    text-align: center;
    line-height: 30px;
    float:left;
    margin-left:5px;
    cursor:pointer;
}